| 摘要 |
<p>The fastener includes a body portion (32) received in a panel opening (52) and a tubular barrel (34) having a free end extending radially inwardly and a midportion (68) bowed outwardly having a diameter greater than the panel opening. The body portion (32) has an outside diameter greater than the inside diameter of the panel opening (52) to form an interference fit providing torque resistance and preventing push-through of the fastener. The method of installing a fastener includes inserting the fastener body portion (32) into the panel opening (52) with the barrel received in a first die member (58). The end of the barrel is deformed radially inwardly and toward the body portion by the first die member (54) and the midportion of the barrel is deformed radially outwardly preventing withdrawal of the fastener element from the panel. The second die member (58) simultaneously deforms the body of the fastener radially outwardly to form the interference fit with the panel.</p> |
